Pete Storey is out of the office.
I will be out of the office starting 22/03/2004 and will not return until 28/03/2004. Thanks for the mail! I am away until the 28th. If you would like an urgent response then please ring Kiss on 020 7692 9922. thanks Pete - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
IIS logging of page requests
Hi, I need to analyse the logs of a site powered by Tomcat 4.1.27 and IIS, using the JK2 redirector DLL. Whenever a request gets put through, it logs it to /jakarta/isapi_redirector2.dll instead of the actual URL it went to eg /index.html . Is there any way to get IIS to log the URLs as entered instead of like this or do you have to write some custom logging component? thanks Pete Storey Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923 Out of hours Support phone 020 7692 9933
URL rewriting and context paths
Hi, Im trying to use url rewriting (in this case ISAPI Redirect) to translate a search engine friendly URL (ie xyz.com/123_keyword_product_name.html) into a tomcat one (xyz.com/app/product.do?id=123). This all works fine and dandy however there is a big problem with it. One of the uses I have is to map tomcat applications to the root context as far as the URL is concerned, but leave them under another context within tomcat itself. I use a shared tomcat server for several applications so they cant all be on the root, but reponses to search engines are a lot better if the URL appears that way. The problem is that in the above example, the Tomcat server responds with Set-Cookie: JSESSIONID=132456789; Path=/app. This Path is of course that of the context path of the application. The browser doesnt thus send this cookie with the next request because the request appears to be to the / path; Tomcat thus gets a new request with no session ID and issues another one again to /app. Is there any way I can force the session cookie to be written to the root context instead of the context of the application? thanks Pete Storey Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923 Out of hours Support phone 020 7692 9933
Re: OT?:Can't include .js file on jsp page controlled by front contro ller servlet
A JavaScript include is a purely HTML thing - it shouldnt be processed in any way by the server. You can do it by going: script language=JavaScript src=xyz.js/script cheers Pete Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923 Januski, Ken [EMAIL PROTECTED] 12/01/2004 16:58 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:OT?:Can't include .js file on jsp page controlled by front contro ller servlet I may be getting in over my head here as I'm really not all that familiar with patterns. And I'm not sure that the pattern has anything to do with problem. But I have a controller servlet through which all web requests must pass. It has worked fine as is. Until I tried to include a .js file on a jsp page. In that case it seems to either print it out to page, rather than execute it, or it tries to use requestDispatcher portion of controller servlet to forward/include it. Normally the requestDispatcher forwards request to the requested page after it checks to see if user is logged in. But now it seems to go into an infinite loop when forwarding. And I guess it's trying to use requestDispather.include because the .js resource is included via a src='http:...' request. I know that this is a very vague question but I wonder if anyone has any clues as to where the problem might lie or what I can start experimenting with. email protected and scanned by AdvascanTM - keeping email useful - www.advascan.com
javamail and tomcat
Hi, Im having some problems using javamail in tomcat - especially the taglibs mailer tag. The problem in this case is that it ignores any data sent to it telling it which SMTP server to use and by appearances sends the mail directly itself instead. Has anyone seen this behaviour before and does anyone know a way to combat it? thanks Pete Storey Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923
Re: RE: urgent
Perhaps this is just mis-typing in the email but you directory for the classes has been spelt calsses - could be the problem if you mean that? shaman jain [EMAIL PROTECTED] 18/08/2003 12:02 Please respond to Tomcat Users List To: Stuart MacPherson [EMAIL PROTECTED] cc: [EMAIL PROTECTED] Subject:Re: RE: urgent hi friends, this is the problem i am facing C:\tomcat\work\Standalone\localhost\callreg\passcall_jsp.java:58: package callreg does not exist callreg.URLBean db = null; An error occurred at line: 2 in the jsp file: /passcall.jsp Generated servlet error: C:\tomcat\work\Standalone\localhost\callreg\passcall_jsp.java:60: package callreg does not exist db = (callreg.URLBean) pageContext.getAttribute(db, PageContext.APPLICATION_SCOPE); An error occurred at line: 2 in the jsp file: /passcall.jsp Generated servlet error: C:\tomcat\work\Standalone\localhost\callreg\passcall_jsp.java:63: package callreg does not exist db = (callreg.URLBean) java.beans.Beans.instantiate(this.getClass().getClassLoader(), callreg.URLBean); and my dir structure is: c:/tomcat/webapps/callreg/web-inf/calsses/callreg/URLBean.class c:/tomcat/webapps/callreg/web-inf/lib/tds.jar and i am includeing jsp as jsp:useBean id=db scope=application class=callreg.URLBean / and connecting as Class.forName(db.getDriver()); Connection con=DriverManager.getConnection(db.getUrl(),db.getUser(),db.getPassword()); pls help me out its urgent thanx in advance Shaman ___ Meet your old school or college friends from 1 Million + database... Click here to reunite www.batchmates.com/rediff.asp - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Jan West/US/AM/TSA is out of the office.
If you look in the help for the list: To stop subscription for this address, mail: [EMAIL PROTECTED] In both cases, I'll send a confirmation message to that address. When you receive it, simply reply to it to complete your subscription. It will, of course, reply automatically and voila! Pete Stuart MacPherson [EMAIL PROTECTED] 18/08/2003 12:59 Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: Jan West/US/AM/TSA is out of the office. This will happen 50 times a day until 26th august... Ahh -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: 18 August 2003 11:47 To: Tomcat Users List Subject: Jan West/US/AM/TSA is out of the office. I will be out of the office starting 08/18/2003 and will not return until 08/26/2003. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Error-page directive does nothing
Hi, we have a lot of occasions where I use the directive error-page error-code500/error-code location/errorPages/500x.jsp/location /error-page in a web.xml file but it does nothing, particularly for errors thrown by a servlet. I have upgraded now to Tomcat 4.1.27 as I have seen some problems with this before but does anyone have any ideas? cheers Pete
Re: Front Controller Servlet
The reason it is crashing is because you are forwarding to a JSP page, however you have already taken over jsp processing in your servlet by declaring that it should handle *.jsp, thus it forwards in a circle until it runs out of stack space. Try using another extension for your controller, such as .ktx as we use in ours. This can then forward sucessfully to jsps! Should be: servlet-mapping servlet-nameFCservlet/servlet-name url-pattern*.ktx/url-pattern /servlet-mapping Then your links can be to index.ktx instead and it will got through ok. Pete Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923 Sharon Cohen [EMAIL PROTECTED] 05/08/2003 13:42 Please respond to Tomcat Users List To: [EMAIL PROTECTED] cc: Subject:Front Controller Servlet I am trying to build FrontController servlet for a web site on Tomcat 4 , after long time of changes on the web.xml file , I wasn't able to achieve this pattern, the web.xml portion is : servlet-mapping servlet-nameFCservlet/servlet-name url-pattern*.jsp/url-pattern /servlet-mapping my problem start when the FrontController servlet needs to forward the request to other jsp pages and when he uses the Forward method , the tomcat activate my FrontController again , and after a while I get : StackOverflowError . Thanks for any help Sharon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: how to suppor 30000 concurrent users
Sorry for being thick but Im a bit confused as to when you are doing anything with the sessions? If I make a request to one server, then go on to another for the next request, how does server 2 get my session from server 1 without server 1 having had to persist the session to disk every time any change is made to it? Pete Angus Mezick [EMAIL PROTECTED] 05/08/2003 15:11 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: how to suppor 3 concurrent users Doesn't seem to have that much of an effect. I guess I should profile it though. I don't want to use session persistence because then I would need to use network session clustering. Session clustering is a requirement for my app. I figure using a DB instead of memory to store my sessions is better than sending 5 network connections to the other 5 of the 6 web servers with the session data that will only be valid to ONE of those servers. Before tomcat we were using Iplanet 4.1 and the cisco load balance we have SAID it could handle session affinity but it didn't seem to be able to. So we went with a DB solution which, to me, seems to be the more optimal solution. The DB also means I can have a MUCH larger number of active sessions using my servers because I don't have to worry about the sessions using all my memory. I just have to worry about DB disk space but I had have 2 or 3 terabytes of disk while only have 2 GB of memory. Seems to be an easy trade. --Angus -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 05, 2003 9:40 AM To: Tomcat Users List Subject: RE: how to suppor 3 concurrent users Angus, doesnt using a shared jdbc based session manager slow the whole thing down a lot? Why dont you just use session persistence? Pete - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: how to suppor 30000 concurrent users
Angus, doesnt using a shared jdbc based session manager slow the whole thing down a lot? Why dont you just use session persistence? Pete
RE: how to suppor 30000 concurrent users
Oh OK cool so it is how I thought - presumably you dont use the session very much (in terms of sending stuff to it) or else there would be one serious amount of db work! Pete
Re: Configuration Error?
The bean should be in the Tomcat/ROOT/WEB-INF/classes/mybeans directory not Tomcat/ROOT/WEB-INF/mybeans. Classes underneath web-inf is the directory for classes. Also, perhaps try removing the contentType directive at the top of the page as it is unnecessary. Oh and also you have put id=bean= - remove the = from the bean=, then change that to 0 as referenced later on. cheers Pete Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923 Pedro Silva [EMAIL PROTECTED] 03/08/2003 20:11 Please respond to Tomcat Users List To: [EMAIL PROTECTED] cc: Subject:Configuration Error? I am really having a bad time using Apache Tomcat for the first time... But I won't give up... Just need help... I have a JSP page that works with a javabean (a simple test page), just look at the code: %@ page contentType=text/html; charset=iso-8859-1 language=java import=java.sql.* errorPage= % html head jsp:useBean class=mybeans.lineBean id=bean= scope=page / titleUsing JavaBeans/title meta http-equiv=Content-Type content=text/html; charset=iso-8859-1 /head body %= bean0.stars(20) % Welcome to JavaBeans! %= bean0.doubleLine(30) % /body /html When I try this page I get the following error: type Exception report message Internal Server Error description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Unsupported encoding: at org.apache.jasper.compiler.ParserController.getReader(ParserController.j ava:440) at org.apache.jasper.compiler.ParserController.parse(ParserController.java: 209) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:210) at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:548) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(J spServlet.java:176) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServle t.java:188) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica tionFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt erChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv e.java:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 72) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv e.java:190) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:566) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.ja va:246) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 72) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:234 7) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java :180) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:566) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa lve.java:170) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:564) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java :170) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:564) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468 ) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 72) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve. java:174) at
RE: JVM tuning
Hmm well only a profiler could tell me that; I was more looking for some (subsequently discovered) things such as you should reseize the young generation to be much larger than the default 25% and so on; there are some rules of thumb such as this which I was looking for! cheers Pete Shapira, Yoav [EMAIL PROTECTED] 04/08/2003 14:16 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: JVM tuning Howdy, Has anyone got any clues on JVM tuning for Tomcat on Windows 2000, Sun 141 I would venture at least a few people on this list have clues. But it's impossible to help you without a clue about your webapp. Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: JVM tuning
Well not really; we know that we are running Tomcat, a web container which has its own (fixed) characteristics. It is a server side app which is processing non state based transactions which are thus highly like to involve a lot of objects being created and destroyed without too many hanging around for long; the details of the webapp, unless it is highly unusual, are likely not to matter particularly. This is a rule of thumb not an exact science and the vast majority of people who run Tomcat would benefit from running in such a configuration (or playing with it to see what the effects were) - read Sun's own tuning documentation and you will see the default settings are not said to be suitable for the majority of server apps. cheers Pete Shapira, Yoav [EMAIL PROTECTED] 04/08/2003 14:29 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: JVM tuning Howdy, -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, August 04, 2003 9:27 AM To: Tomcat Users List Subject: RE: JVM tuning Hmm well only a profiler could tell me that; I was more looking for some (subsequently discovered) things such as you should reseize the young generation to be much larger than the default 25% and so on; there are some rules of thumb such as this which I was looking for! I would argue any such rule of thumb is as likely to hurt performance as improve it for your specific app. Yoav Shapira Millennium ChemInformatics This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: JVM tuning
Ah sorry I should really have said that I was focusing specifically on memory managment; general performance tuning is a completely different matter in which I do agree with you! On the memory front however I would stand by the fact that most tomcat webapps (big or small) would benefit from a change in the default JVM config. Anyway, have sorted out my problem now (by doing just that as well as a GC change) and performance is 10x better! cheers Pete Shapira, Yoav [EMAIL PROTECTED] 04/08/2003 14:45 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: JVM tuning Howdy, Well not really; we know that we are running Tomcat, a web container which has its own (fixed) characteristics. It is a server side app which is processing non state based transactions which are thus highly like to involve a lot of objects being created and destroyed without too many hanging around for long; the details of the webapp, unless it is highly unusual, are likely not to matter particularly. This is a rule of thumb not an exact science and the vast majority of people who run Tomcat would benefit from running in such a configuration (or playing with it to see what the effects were) I disagree ;) Every time I've tuned a webapp for pay, both transactional and not, both full J2EE and just servlets/JSPs, the above has been false. The webapp's specific implementation matters far more (typically 3-4 orders of magnitude) than the container implementation, especially for a mature container which has been tuned repetitively and carefully over time. It's precisely because of this, and because as you say performance tuning is not a science, that a rule of thumb is as likely to hurt as it is to help if blindly applied. read Sun's own tuning documentation and you will see the default settings are not said to be suitable for the majority of server apps. I appreciate the pointer - I used to help write them ;) Good luck, however, as it's always YMMV with these things. Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: JVM tuning
Isnt the adaptive sizing only relevant to much larger memory configurations (Im running this JVM with a max heap of 1-1.5Gb? Pete Angus Mezick [EMAIL PROTECTED] 04/08/2003 17:51 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: JVM tuning Wouldn't AdaptiveSizePolicy help? (saves you the work of Java Heap usage analyzing :-) : I use this on my 2x proc machine. -XX:UseParallelGC -XX:+UseAdaptiveSizePolicy -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, August 04, 2003 9:55 AM To: Tomcat Users List Subject: RE: JVM tuning Ah sorry I should really have said that I was focusing specifically on memory managment; general performance tuning is a completely different matter in which I do agree with you! On the memory front however I would stand by the fact that most tomcat webapps (big or small) would benefit from a change in the default JVM config. Anyway, have sorted out my problem now (by doing just that as well as a GC change) and performance is 10x better! cheers Pete Shapira, Yoav [EMAIL PROTECTED] 04/08/2003 14:45 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: JVM tuning Howdy, Well not really; we know that we are running Tomcat, a web container which has its own (fixed) characteristics. It is a server side app which is processing non state based transactions which are thus highly like to involve a lot of objects being created and destroyed without too many hanging around for long; the details of the webapp, unless it is highly unusual, are likely not to matter particularly. This is a rule of thumb not an exact science and the vast majority of people who run Tomcat would benefit from running in such a configuration (or playing with it to see what the effects were) I disagree ;) Every time I've tuned a webapp for pay, both transactional and not, both full J2EE and just servlets/JSPs, the above has been false. The webapp's specific implementation matters far more (typically 3-4 orders of magnitude) than the container implementation, especially for a mature container which has been tuned repetitively and carefully over time. It's precisely because of this, and because as you say performance tuning is not a science, that a rule of thumb is as likely to hurt as it is to help if blindly applied. read Sun's own tuning documentation and you will see the default settings are not said to be suitable for the majority of server apps. I appreciate the pointer - I used to help write them ;) Good luck, however, as it's always YMMV with these things. Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat 4.1x running as NT Service Issue
I dont think the java versi0on is necessarily a problem however what you need to remeber is when you install the service, you fix the settings of the JVM. If you want to control memory settings, you need to do it in the tomcat.exe command which you run to install the service. My server is down at the moment so I cant give you an example but if you look in tomcat.exe help you can see how to add java options, and one of them will need to be somthing like what was suggested below (ie -Xmx128m). As an aside, I personally wouldnt do the -Xms128m as well because this will mean that that much memory is used up irrespective of requirements. Whilst this configuration is good in a server environment, in a client where memory is more of a premium, you should only default to what you expect it to use on a minimal or average basis. cheers Pete Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923 Robert Porter [EMAIL PROTECTED] 03/08/2003 04:49 Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: Tomcat 4.1x running as NT Service Issue I am not sure why we are not running 1.4, but the image from corporate has 1.3.1 and we have been told to live with it. We are running pretty much the same configuration from what you describe but with drastically different results. I am checking on JVM settings, and I will try what you suggest. The laptops are Dell and IBM late models with 256 MB of memory and large fast drives so I don't think it's the hardware. All running W2K Pro with SQL Server 2000 Std Ed. We are using an older JDBC driver, what JDBC driver are you using? -Original Message- From: Nathan Ward [mailto:[EMAIL PROTECTED] Sent: Saturday, August 02, 2003 10:27 PM To: Tomcat Users List Subject: Re: Tomcat 4.1x running as NT Service Issue I'm not sure that this is it, but you might try setting the JVM min and max memory limits when starting Tomcat by adding the following to $CATALINA_HOME\bin\catalina.bat: set JAVA_OPS = -Xms100m -Xmx100m Default for the JVM I believe should be 64mb, but who knows. Why are you using jdk 1.3.1? Do you have existing code that is not compatible with jdk 1.4? We are running Tomcat 4.1.24 as a service under Windows 2000 Server accessing an SQL Server database on the same machine with JDK 1.4.1_01 and it is working. Nathan - Original Message - From: Robert Porter [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, August 02, 2003 6:57 PM Subject: Tomcat 4.1x running as NT Service Issue I have scanned all the archives, and have seen some issues that are similar but not quite the same so I am posting this request. We are running Tomcat 4.1.24 Binary release, as a Service on Windows 2000 SP3 and SP4 Pro version. No JSP just servlets. The Tomcat instance is hosting 2 servlets that talk to a local SQL Server 2000 database on the same machine. A VB 6 client is talking to the servlets via http post etc, and exchanging XML documents for requests and replies. Running as a Service, with JDK 1.3.1 as the JVM the service will crash after about 10 minutes of activity. Just prior to the crash, available memory will decrease to 0 and the system will slow to a crawl with a lot of disk activity, paging I imagine. Running Tomcat in a window alleviates the problem entirely, so I am assuming there are some parameters that are being passed via the Startup.bat file that are not happening with the service. Or perhaps to the JVM, I am very new to Tomcat so I am not sure how to accomplish this. However we really want to have Tomcat running as a service since this is a laptop app being deployed to hundreds of our users, and we don't want them mucking about with the Window created by running Tomcat as a windowed service. Plus, having it run as a service means it is one less thing to worry about in our application code. However we can't deploy the app if it crashes every 10 minutes. Any help or suggestions would be appreciated. RP2C Inc http://www.rp2c.com [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat 4.1x running as NT Service Issue
The settings are not controlled in the startup.bat - if you want to control them from the command line, you set the environment variable JAVA_OPTS with them. The default settings for a Sun JVM is to allow a max heap of 64m - if you try to exceed this, java.lang.OutOfMemoryException s will be thrown and by and large the whole thing will fall over. You can probably see these in the log file if you look. Again if you havent specified anything in the service setup, it will probably run with 64m of memory as well. Pete Robert Porter [EMAIL PROTECTED] 03/08/2003 14:27 Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: Tomcat 4.1x running as NT Service Issue I agree with your view on memory usage on a client, but what I am not clear on is do those settings constitute a hard limit for Tomcat/JVM? And if so, what happens when the limit is exceeded, or it attempts to. What we see now is a gradual increase in memory usage over a 10 - 15 minute period, followed by an abend of the Tomcat service. If we run the Tomcat session in a window, using the stock Startup.bat file included with the binary distribution memory usage stays flat. This is what led me to wonder if some of these memory parameters to the JVM (during the install of the service) might be required. I am guessing that the stock install of the service does not set any limit on memory usage? Is this true? Thanks in advance! Cheers, Bob Porter -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Sunday, August 03, 2003 5:26 AM To: Tomcat Users List Subject: RE: Tomcat 4.1x running as NT Service Issue I dont think the java versi0on is necessarily a problem however what you need to remeber is when you install the service, you fix the settings of the JVM. If you want to control memory settings, you need to do it in the tomcat.exe command which you run to install the service. My server is down at the moment so I cant give you an example but if you look in tomcat.exe help you can see how to add java options, and one of them will need to be somthing like what was suggested below (ie -Xmx128m). As an aside, I personally wouldnt do the -Xms128m as well because this will mean that that much memory is used up irrespective of requirements. Whilst this configuration is good in a server environment, in a client where memory is more of a premium, you should only default to what you expect it to use on a minimal or average basis. cheers Pete Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923 Robert Porter [EMAIL PROTECTED] 03/08/2003 04:49 Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: Tomcat 4.1x running as NT Service Issue I am not sure why we are not running 1.4, but the image from corporate has 1.3.1 and we have been told to live with it. We are running pretty much the same configuration from what you describe but with drastically different results. I am checking on JVM settings, and I will try what you suggest. The laptops are Dell and IBM late models with 256 MB of memory and large fast drives so I don't think it's the hardware. All running W2K Pro with SQL Server 2000 Std Ed. We are using an older JDBC driver, what JDBC driver are you using? -Original Message- From: Nathan Ward [mailto:[EMAIL PROTECTED] Sent: Saturday, August 02, 2003 10:27 PM To: Tomcat Users List Subject: Re: Tomcat 4.1x running as NT Service Issue I'm not sure that this is it, but you might try setting the JVM min and max memory limits when starting Tomcat by adding the following to $CATALINA_HOME\bin\catalina.bat: set JAVA_OPS = -Xms100m -Xmx100m Default for the JVM I believe should be 64mb, but who knows. Why are you using jdk 1.3.1? Do you have existing code that is not compatible with jdk 1.4? We are running Tomcat 4.1.24 as a service under Windows 2000 Server accessing an SQL Server database on the same machine with JDK 1.4.1_01 and it is working. Nathan - Original Message - From: Robert Porter [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, August 02, 2003 6:57 PM Subject: Tomcat 4.1x running as NT Service Issue I have scanned all the archives, and have seen some issues that are similar but not quite the same so I am posting this request. We are running Tomcat 4.1.24 Binary release, as a Service on Windows 2000 SP3 and SP4 Pro version. No JSP just servlets. The Tomcat instance is hosting 2 servlets that talk to a local SQL Server 2000 database on the same machine. A VB 6 client is talking to the servlets via http post etc, and exchanging XML documents for requests and replies. Running as a Service, with JDK 1.3.1 as the JVM the service will crash after about 10 minutes of activity. Just prior to the
Re: Tomcat 4.1x running as NT Service Issue
thanks been looking for something like that for ages! Tim Funk [EMAIL PROTECTED] 03/08/2003 16:52 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:Re: Tomcat 4.1x running as NT Service Issue If you need to run NT as a service, use this tool to set it up. It makes life pretty nice. http://web.bvu.edu/staff/david/tcservcfg/ -Tim http://jakarta.apache.org/tomcat/faq/windows.html Robert Porter wrote: I agree with your view on memory usage on a client, but what I am not clear on is do those settings constitute a hard limit for Tomcat/JVM? And if so, what happens when the limit is exceeded, or it attempts to. What we see now is a gradual increase in memory usage over a 10 - 15 minute period, followed by an abend of the Tomcat service. If we run the Tomcat session in a window, using the stock Startup.bat file included with the binary distribution memory usage stays flat. This is what led me to wonder if some of these memory parameters to the JVM (during the install of the service) might be required. I am guessing that the stock install of the service does not set any limit on memory usage? Is this true? Thanks in advance! Cheers, Bob Porter - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat 4.1x running as NT Service Issue
well in that case the tomcat.exe included with the tomcat dist is fine once you have fixed your setup. It is simply run as a batch script, or as part of an install (you execute tomcat.exe once with the relevant parameters to install it) Pete Robert Porter [EMAIL PROTECTED] 03/08/2003 18:01 Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: Tomcat 4.1x running as NT Service Issue Found that while googling my issue, it looks very promising, but I need something we can include in a custom setup that will be run by users. Although that tool will help in testing! Seen anything like it for deploying webapps? -Original Message- From: Tim Funk [mailto:[EMAIL PROTECTED] Sent: Sunday, August 03, 2003 11:52 AM To: Tomcat Users List Subject: Re: Tomcat 4.1x running as NT Service Issue If you need to run NT as a service, use this tool to set it up. It makes life pretty nice. http://web.bvu.edu/staff/david/tcservcfg/ -Tim http://jakarta.apache.org/tomcat/faq/windows.html Robert Porter wrote: I agree with your view on memory usage on a client, but what I am not clear on is do those settings constitute a hard limit for Tomcat/JVM? And if so, what happens when the limit is exceeded, or it attempts to. What we see now is a gradual increase in memory usage over a 10 - 15 minute period, followed by an abend of the Tomcat service. If we run the Tomcat session in a window, using the stock Startup.bat file included with the binary distribution memory usage stays flat. This is what led me to wonder if some of these memory parameters to the JVM (during the install of the service) might be required. I am guessing that the stock install of the service does not set any limit on memory usage? Is this true? Thanks in advance! Cheers, Bob Porter - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
error-page directive has no effect
Hi, ive got a problem currently with the error-page directive doing nothing when I use it in an app (on either tomcat 4.1.18 or .27). At the bottom of my app's web.xml, I have the following tag: error-page error-code500/error-code location/errorPages/500x.jsp/location /error-page This corresponds to a working page, however this tag is completely ignored. As a result, in order to get any 500 errors to be handled properly, I have to put an @page errorPage directive in the top of every JSP - this doesnt of course work for servlets, so presents a problem then. Has anyone any idea why it wouldnt work? I have had this problem thinking about it before which meant that any Struts actions would not get handled by the error handler. I ended up having to write a filter which caught them for me and forwarded the request to the error page with the exception held as a request attribute - this is obviously far from ideal!! thanks Pete Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923
JVM tuning
Has anyone got any clues on JVM tuning for Tomcat on Windows 2000, Sun 141 or 142? Im playing with some of the young/old generation and GC settings but am having trouble deciding what is best. I think that I should probably push out the young generation to be a larger than normal amount as many of the objects created are very transitory, and I have seen lots of GC activity going on there. On that note, has anyone tried the Sun GC portal? Im a bit baffled as to how to create a log file for it - turning on the switches is all very well and prints to the screen OK but it doesnt seem to log to the .out files? cheers Pete
Problems with Tomcat in a high load environment
Hi, we are running Tomcat 4.1.18 on Windows 2000 under JDK1.4.1_01. We are using IIS as a web server connecting using the ISAPI JK 2 connector. We are currently experiencing 2 seperate problems when under high load (ie 30 requests per second): 1. A huge number of log events (~30 sets per minute) are generated in the NT event log which show problems with the ISAPI connector. Each time there is a problem, 7 lines are created: Error: [jk_worker_ajp13.c (512)]: ajp13.service() Error forwarding ajp13:localhost:8029 1 0 Error: [jk_worker_ajp13.c (416)]: ajp13.service() ajpGetReply recoverable error 3 Error: [jk_handler_response.c (178)]: handler.response() Error sending response Error: [jk_service_iis.c (157)]: jk_ws_service_t::head, ServerSupportFunction failed Error: [jk_worker_ajp13.c (416)]: ajp13.service() ajpGetReply recoverable error 3 Error: [jk_handler_response.c (200)]: Error ajp_process_callback - write failed Error: [jk_service_iis.c (247)]: jk_ws_service_t::write, WriteClient failed These I think lead to the eventual crash of IIS however I also suspect that they may cause user errors though I havent actually seen any evidence of this. Does anyone know anything about these errors or what I can do to reduce them? Could it be a tuning of Tomcat issue? 2. The server is set up currently with -Xms512m and the same for Xmx. This, I would have thought, was OK for this application, though of course I could be wrong, but is in any case irrelevant to the problem as if I increase memory to 1Gb it makes no odds. The server will run fine for a few minutes at about 128m of memory usage. At some (slightly random point with no obvious trigger), it will in a matter of seconds use up all available memory, thus triggering a huge rise in the processor usage which sits at roughly 50-60% (across 2 processors) constantly. It is worth noting that 1 processor is not maxed out - the load is relatively evenly distributed. After a further while, the young generation space runs out of memory and a process ensues of the processor load bouncing up to 100% and back to 60% over and over again as it GCs, reduces the momery used to ~ 15m less than it was, then it is used up again and so on. This obviously seriously impacts the usage of the application. I cant see why it is doing it; this is an ecommerce application and the loads are not that high - clearly a leak of some description is occuring somewhere but the speed with which these changes happen baffle me, and I dont thik there is much setup work I can do to change it. I could install a profiler to find out whats going on but it is a live system and I am loath to do so. Finally it is worth noting that I have only just made this system live and a functionally identical although architecturally simpler version ran quite happily under the same loads using no more than 256m of ram under JRun 3.1. Any ideas?! cheers Pete Kiss Technologies http://www.kisstechnologies.co.uk/ 4, Percy Street London W1T 1DF Phone numbers: Phone 020 7692 9922 Fax 020 7692 9923
RE: Problems with Tomcat in a high load environment
I do agree and whilst our dev environments are pretty close to the live ones, I dont have a particularly useful set of use cases which I can test with (well I do but they dont cause the problem to occur on our dev systems!). Thus the only meaningful profiling would have to be done on the live system which clearly is less than desirable. I also agree that 30 r/s isnt a huge load however when the site is running at about 12 as say it is at the moment, then this doesnt happen. It is thus a problem associated with the high loads. Also notable is a very large number of the following 3 types of error which occur in Tomcat and I believe are related to the JK2 connector (I have also tried the JK connector with similar results): 01-Aug-2003 17:48:01 org.apache.jk.common.ChannelSocket processConnection INFO: Server has been restarted or reset this connection 01-Aug-2003 17:48:21 org.apache.jk.server.JkCoyoteHandler action INFO: RESET 01-Aug-2003 17:59:12 org.apache.jk.server.JkCoyoteHandler action SEVERE: Error in action code java.net.SocketException: Connection reset by peer: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at java.net.SocketOutputStream.write(SocketOutputStream.java:136) at org.apache.jk.common.ChannelSocket.send(ChannelSocket.java:435) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:627) at org.apache.jk.server.JkCoyoteHandler.action(JkCoyoteHandler.java:372) at org.apache.coyote.Response.action(Response.java:222) at org.apache.coyote.Response.finish(Response.java:343) at org.apache.coyote.tomcat4.OutputBuffer.close(OutputBuffer.java:326) at org.apache.coyote.tomcat4.CoyoteResponse.finishResponse(CoyoteResponse.java:500) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:224) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:261) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:360) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:632) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:590) at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:707) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:530) at java.lang.Thread.run(Thread.java:536) Perhaps it is these which cause the problem? I cant believe that there is some intrinsic problem with Tomcat as clearly lots of people use it successfully though not, perhaps, when mated to IIS. I am currently considering switching to Jetty for a bit better performance which in this app is crucial. Anyone done this successfully? cheers Pete Shapira, Yoav [EMAIL PROTECTED] 01/08/2003 18:45 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: Problems with Tomcat in a high load environment Howdy, Even if your loathe to do it, a profiler is invaluable as long as the profiled environment (your dev/test env) is close enough to production to be meaningful. You should profile, and run stress tests, on hardware and software that's as similar as possible to production, before going live. FWIW, 30 requests/sec is not an extremely high load: most of our apps routinely handle several times that load on standalone tomcat 4.1.24 (and starting at 12:01 tonight, 4.1.27 ;)) Have you tried running without the IIS front-end? It could be worth a shot. Tomcat can handle the static files as well. Yoav Shapira Millennium ChemInformatics -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, August 01, 2003 1:29 PM To: [EMAIL PROTECTED] Subject: Problems with Tomcat in a high load environment Hi, we are running Tomcat 4.1.18 on Windows 2000 under JDK1.4.1_01. We are using IIS as a web server connecting using the ISAPI JK 2 connector. We are currently experiencing 2 seperate problems when under high load (ie 30 requests per second): 1. A huge number of log events (~30 sets per minute) are generated in the NT event log which show problems with the ISAPI connector. Each time there is a problem, 7 lines are created: Error: [jk_worker_ajp13.c (512)]: ajp13.service() Error forwarding ajp13:localhost:8029 1 0 Error: [jk_worker_ajp13.c (416)]: ajp13.service() ajpGetReply recoverable error 3 Error: [jk_handler_response.c (178)]: handler.response() Error sending response Error: [jk_service_iis.c (157)]: jk_ws_service_t::head, ServerSupportFunction failed Error: [jk_worker_ajp13.c (416)]: ajp13.service() ajpGetReply recoverable error 3 Error: [jk_handler_response.c (200)]: Error ajp_process_callback - write failed Error: [jk_service_iis.c (247)]: jk_ws_service_t::write, WriteClient failed These I think lead to the eventual crash
Alternatives to DBCP
Has anyone used any alternatives to the DBCP with Tomcat because it seems
to get worse and worse as I use it more. For no apparent reason on one
server, if there is a failure of a query to clean up its resources
properly then when it it cleaned up by the finalizer method of our query
object it actually closes the connection and then DBCP doesnt open any
more even though it should, so any connection attempt ends up saying
Connection is closed. This is obviously a bit of a problem. I can only
assume that the problem lies in the combination of DBCP and my code.
Obviously I know that we shouldnt ever use a finalizer to be cleaning
stuff up but this is is development so allows us to catch where this
occurs in code. The code for our Query object is included here.
The cleanUp method works fine normally it seems it is just when called by
a finalizer that it goes wrong (although I suppose it could be caused by a
SQL Exception in the back end of the system?). We're using INet
Software's Sprinta2000 SQL Server 2000 JDBC driver if that of any
importance.
cheers
Pete
/*
* Query.java
*
* Created on 27 May 2002, 15:20
*/
package com.ktdev.sql;
import javax.sql.*;
import java.sql.*;
import javax.naming.*;
import java.io.*;
import java.util.*;
import com.ktdev.errors.GetStackTrace;
import org.apache.log4j.Logger;
/**
*
* @author Dominic Bevacqua
* @version
*
* Wrapper class for java.sql.Statement and java.sql.CallableStatement
*
*/
public class Query {
static Logger log = Logger.getLogger(Query.class);
/** static variables **/
private static Hashtable JNDIEnv=null;
/** non-static variables **/
private Connection conn;
private Vector statements = new Vector();
private Vector resultSets = new Vector();
private Statement currentStmt;
private String callingMethodStackTrace = ;
private String dataSourceName;
private String commandText;
private boolean isUpdate=false;
private boolean isCallable=true;
private boolean useServerCursor=false;
private boolean returnsMultipleResultSets=false;
private int resultSetType = java.sql.ResultSet.TYPE_FORWARD_ONLY;
private int resultSetConcurrency =
java.sql.ResultSet.CONCUR_READ_ONLY;
/** Constructors **/
// should we provide no args constructor? no real need for it but...
public Query() {
// This simply gets the stack that called the query so if it is
not cleaned up properly then we can report it.
// Only run if it is debug mode.
if (log.isDebugEnabled())
callingMethodStackTrace =
GetStackTrace.getStackTraceAsString();
}
public Query(String dataSourceName) {
if (log.isDebugEnabled()) {
log.debug(Creating a Query connection to + dataSourceName);
callingMethodStackTrace =
GetStackTrace.getStackTraceAsString();
}
this.setDataSourceName(dataSourceName);
this.openJNDIConnection();
}
/** Create new Query with specified commandText on specified
dataSourceName **/
public Query(String commandText, String dataSourceName) {
this(dataSourceName);
this.setCommandText(commandText);
this.createStatement();
this.execute();
log.debug(Query created and run with commandText = +
commandText );
}
// In case someone does not want to use JNDI to get connection...
public Query(String url, String username, String password, String
driver) {
if (log.isDebugEnabled()) {
log.debug(Creating a Query using JDBC parameters.);
callingMethodStackTrace =
GetStackTrace.getStackTraceAsString();
}
try {
Class.forName(driver);
conn = DriverManager.getConnection(url , username, password);
} catch (ClassNotFoundException ce) {
// throw exception
throw new QueryException(ce.getMessage());
} catch (SQLException se) {
// throw exception
throw new QueryException( se );
}
}
// Better way of doing it...
private void openJNDIConnection(){
try {
// Define JNDI InitialContext object.
InitialContext ctx = new InitialContext(JNDIEnv);
// Look up data source in InitialContext.
DataSource ds = (DataSource)ctx.lookup(dataSourceName);
// get connection from pool
conn = ds.getConnection();
} catch (javax.naming.NamingException ne) {
log.error(Caught a NamingException trying to get a Connection
from JNDI., ne);
throw new QueryException(ne.getMessage());
} catch (SQLException se) {
log.error(Caught a SQLException trying to get a Connection
from JNDI., se);
throw new QueryException( se );
}
}
public void createStatement() {
// First clear the current statement as we are
Re: Alternatives to DBCP
Thanks will do. Presumably I just then replace the JAR file in the common\lib directory of the server? thx Pete Tim Funk [EMAIL PROTECTED] 23/06/2003 13:16 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:Re: Alternatives to DBCP There was recently a similar complaint in common-dev. DBCP hasn't had a release in a very long time and has significant bug fixes in it with respect to connection handling (i think). So your best best is to checkout from HEAD (jakarta-commons/dbcp) and build from source. There are also some milestone tags with respect to struts since the last official dbcp release, so checking out with one of the tags instead might help if a new bug was introduced since the 1.0 release. -Tim [EMAIL PROTECTED] wrote: Has anyone used any alternatives to the DBCP with Tomcat because it seems to get worse and worse as I use it more. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Hyperthreading and performance
I realise that this is slightly a JVM dependant question but doe anyone have any views on using Hyperthreading on Xeon processors and whether it will affect performance or not? As far as I can ascertain, hyperthreading essentially splits the processor into two threads internally which appear to the OS as two processors (so on a dual system you get four). This allows for performance equivalent of a dual processor system when you only have one proc, etc etc. Will this help or hinder Tomcat? Ive heard many people saying essentially it's better left turned off unless you have a very specific application that might use it (eg Photoshop), but with Tomcat being multi-threaded I cant see why it wouldnt benefit. Anyone know anything a bit more definative (currently Im using Sun's 141_01 and 02 JVM in production). thanks Pete Kiss Technologies http://www.kisstechnologies.co.uk/ Please note, we have moved! 4, Percy Street London W1T 1DF New permanent phone numbers: Phone 020 7692 9922 Fax 020 7692 9923
RE: Stopping caching in tomcat
Surely a querystring has no bearing on a URL mapping? I will add some
logging though to see. I have solved the problem with a workaround by
putting in META HTTP-EQUIV tags in the header. After looking at MSDN I
have added a subtely different tag of expires=-1 instead of expires=0 and
it does now work, but essentially Im not sure why it works on the page
itself but not as real headers. Id certainly rather have the filter work
instead of writing these into every page where they can easily be missed
out.
Hmm!
Pete
Shapira, Yoav [EMAIL PROTECTED]
27/05/2003 15:20
Please respond to Tomcat Users List
To: Tomcat Users List [EMAIL PROTECTED]
cc:
Subject:RE: Stopping caching in tomcat
Howdy,
1. Meta tags will work. They are almost the same as what you're putting
in the filter. However, I like your filter approach better, so
2. Have you verified your filter is correctly mapped? Add some logging
statements to it, as I for one am not sure it's being mapped to your
first action. /*.ktx does not match /startquote.ktx?policyID=1 because
of the part after .ktx.
Yoav Shapira
Millennium ChemInformatics
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 27, 2003 7:25 AM
To: [EMAIL PROTECTED]
Subject: Stopping caching in tomcat
Hi,
Im running a Tomcat/IIS app and I have a major problem in that I am
using
struts to power a set of actions in the site and the first action that
is
linked to is done as a link : /startquote.ktx?policyID=1 . IE6 however
caches this page and so doesnt run the action to pull up the page.
this
causes various things not to be set up properly.
Furthermore, the index page is also cached which means that a session
is
not instatiated for the user so the first time they submit a page, they
get a session timed out problem.
I have written a filter which I hoped would cure caching but it hasnt
made
any difference. I know caching is a problem but I cant seem to find
any
way around it! Has anyone got any ideas? Putting in meta tags has
never
really worked before but maybe it will - if so what should they be?
The filter is below:
/*
* AntiCachingFilter.java
*
* Created on 27 May 2003, 10:58
*/
package com.ktdev.filters;
import java.io.*;
import java.net.*;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
/**
*
* @author Pete Storey
* @version
*/
public class AntiCachingFilter extends GenericFilter {
public AntiCachingFilter() {
}
/**
*
* @param request The servlet request we are processing
* @param result The servlet response we are creating
* @param chain The filter chain we are processing
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet error occurs
*/
public void doFilter(ServletRequest request, ServletResponse
response,
FilterChain chain)
throws IOException, ServletException {
HttpServletResponse httpResponse = (HttpServletResponse)
response;
httpResponse.setHeader(Pragma, no-cache);
httpResponse.setHeader(Expires, 0);
httpResponse.setHeader(Cache-control, no-cache,
must-revalidate);
// Go on to the next one
chain.doFilter(request, response);
}
}
In web.xml
filter
filter-nameAntiCachingFilter/filter-name
descriptionSets anti caching headers in the
response/description
filter-classcom.ktdev.filters.AntiCachingFilter/filter-class
/filter
filter-mapping
filter-nameAntiCachingFilter/filter-name
url-pattern/*.ktx/url-pattern
/filter-mapping
Thanks
Pete
Kiss Technologies
http://www.kisstechnologies.co.uk/
Please note, we have moved!
4, Percy Street
London
W1T 1DF
New permanent phone numbers:
Phone 020 7692 9922
Fax 020 7692 9923
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Re: Tomcat - JDBC - MS SQL Driver Recommendations? (was: Tomcat / JDBC / MSSQL / Connection lost and won't reconnect)
We use iNet software's Sprinta 2000 driver and find it excellent. It is high performance and provides considerably more features than the MS driver. It is not very high cost (a few hundred dollars for a site license IIRC) and is both fully type 4 compliant and small. Their whole range of drivers is very good and I have found them to be a lot better than any others for type 4 drivers - I would use them every time (and I have for some of their other products too!) Go to www.inetsoftware.de if you would like a look Pete Paul \(BRI\) [EMAIL PROTECTED] 27/05/2003 16:13 Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:Tomcat - JDBC - MS SQL Driver Recommendations? (was: Tomcat / JDBC / MS SQL / Connection lost and won't reconnect) I had posted this question about reconnection problems with MS's JDBC driver. While it turned out that no one had the same issue on this, I wondered what drivers are best for Tomcat - SQL Server. Are there other suitable free drivers? Are others using commercial drivers? I have read some of the reviews on various sites - but words from those actually using the drivers would be appreciated. If this question seems to afar from tomcat I would be happy to post elsewhere. But it is nice to find a good group dedicated to tomcat - this is new to me (coming from MS) and I have been happy so far learning more each day. Thanks for your help, Paul -Original Message- From: Paul (BRI) [mailto:[EMAIL PROTECTED] Sent: Friday, May 23, 2003 10:28 AM To: [EMAIL PROTECTED] Subject: Tomcat / JDBC / MS SQL / Connection lost and won't reconnect I am having a problem that I am guessing can't be uncommon. I wanted to provide details on my exact setup to see if anyone has solved this...or if I am doing something stupid.. I have: Tomcat 4.1.x, Microsoft's JDBC Type 4 driver, and MS SQL Server 2000. Tomcat is running on a linux (red hat) box and SQL Server is running on a separate box (with Windows 2000 Server). The application sitting on the linux box is a web application. Tomcat is the only server (for the web and servlets). I noticed that if there is any interruption in the network connection between the two boxes the connection is dropped and Tomcat (or the driver) will not reconnect until I shutdown/startup Tomcat. I have seen some code for autoReconnect for mySQL and wasn't clear if that was the answer for MS drivers. If so, what is the syntax for this? I am curious if this is common. Or, is using a Microsoft Driver the problem? :o It seens hard to believe that the default behavior of the driver allows for this connection drop. Am I doing something else wrong? Below is the resource entry in my server.xml file. Thank you very much for your help. Paul !-- connection pooling -- Resource name=jdbc/myName auth=Container type=javax.sql.DataSource/Resource ResourceParams name=jdbc/myName parameter namefactory/name valueorg.apache.commons.dbcp.BasicDataSourceFactory/value /parameter !--MS SQL User name-- parameter nameusername/name valuemyUserName/value /parameter !--MS SQL Password-- parameter namepassword/name valuemyPassword/value /parameter !--JDBC Driver Class Name-- parameter namedriverClassName/name valuecom.microsoft.jdbc.sqlserver.SQLServerDriver/value /parameter !--MS SQL Server Url*-- parameter nameurl/name valuejdbc:microsoft:sqlserver://xxx.xxx.xxx.xxx:;DatabaseName=myNa me/value /parameter !--To configure a DBCP DataSource so that abandoned dB connections are removed and recycled -- parameter nameremoveAbandoned/name valuetrue/value /parameter !--Use the removeAbandonedTimeout parameter / seoonds.-- parameter nameremoveAbandonedTimeout/name value60/value /parameter !-- Maximum number of dB connections in pool. Set to 0 for no limit. -- parameter namemaxActive/name value100/value /parameter !-- Maximum number of idle dB connections to retain in pool. Set to 0 for no limit.-- parameter namemaxIdle/name value30/value /parameter
default page cannot be removed
Im having a very strange problem under tomcat 4.1.18 whereby I am deploying an app onto the root context of the server. My default page is index.jsp, however whe i then view this page in the application I always get the initial welcome page from the welcome application. Now this application no longer exists in the server so I am baffled as to where it's coming from and why I get the wrong thing. If i delet index.jsp, then I get a 404 error as expected. This is equally true if say I use default.jsp. I am presuming that this is a bug in tomcat as I cant understand anything else that could be causing it. Has anyone else seen this problem? cheers Pete Storey Kiss Technologies http://www.kisstechnologies.co.uk/ Please note, we have moved! 4, Percy Street London W1T 1DF New permanent phone numbers: Phone 020 7692 9922 Fax 020 7692 9923
RE: default page cannot be removed
Thanks Jan, did the trick! Pete Jan Behrens [EMAIL PROTECTED] 17/03/2003 22:00 Please respond to Tomcat Users List To: Tomcat Users List [EMAIL PROTECTED] cc: Subject:RE: default page cannot be removed Hi Pete, Im having a very strange problem under tomcat 4.1.18 whereby I am deploying an app onto the root context of the server. My default page is index.jsp, however whe i then view this page in the application I always get the initial welcome page from the welcome application. Now this application no longer exists in the server so I am baffled as to where it's coming from and why I get the wrong thing. If i delet index.jsp, then I get a 404 error as expected. This is equally true if say I use default.jsp. I am presuming that this is a bug in tomcat as I cant understand anything else that could be causing it. Has anyone else seen this problem? cheers Pete Storey i am not sure but i think i've seen something alike, only with class-files. i had a static class containing certain parameters for my app. when i deployed to my nb for a presentation i had to change these parameters and recompile same class. the new build however seemed to be ignored by tomcat - through restarts and i don't know what... only after i deleted everything in the %TOMCAT ROOT %/work/ directory i could finaly convince him to accept my changes... have you tried same yet? regards jan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
